Name: Calibration Technologies
Address: 920 N. Tradewinds Pkwy, Columbia, MO, 65201, United States
Telephone: 8663945861

Provides the option to add additional number of inputs and output for the GASMARK M255 controller.
Each module may be added independently to an M255 network.
Mix and match any combination of modules to meet the unique needs of your facility.
All modules allow an operator to monitor and/or control connected devices from the GASMARK M255 control panel.
The CTI enclosure is recommended and specifically designed to house the module boards. However, modules can be installed in any approved enclosure.
An auxiliary power supply may be required based on your application. The CTI 24Vdc 6.5A power supply is recommended, but any approved external power supply can be used. Contact CTI for further information.
Expansion modules available:
- Relay Output Module: Eight relays available to meet user need for increased connections to audio/visual devices, exhaust fans, solenoid valves, etc.
- Analog Input Module: Receives up to eight 4-20mA analog inputs from gas detectors or other sensors and re-transmits over RS-485 Modbus to the M255.
- Analog Output Module: Outputs up to eight 4-20mA signals to devices such as Entry Monitors or PLCs.
- Discrete Input Module: Receives up to four NO/NC input devices such as switches or pushbuttons to be configured by the M255.

Voltage	24Vdc with isolation or class 2 power supply
Device Current	250mA@24Vdc
Pass Through Current	M-AIM: 24Vdc per channel, 12A Max per module M-DIM4: 7.5A@24Vdc M-RM8: 7.55A@24Vdc Relay Output: 5A@24Vdc, 8A@120-240Vac
Communications Modbus	Modbus RTU, 8-E-1 @ 9600 baud
Communications Analog	M-AIM8: Input Signal: 4-20mA, 251 Ohm Input impedance M-AOM8: Output Signal: 4-20mA
Fuses	M-AIM8: Not Field Serviceable M-DIM4: Replaceable 58V, 7.5A Blade M-AOM8: Not Field Serviceable M-RM8: Replaceable 58V, 7.5A Blade
Terminal Plugs	26-12 AWG, torque 4.4 in-lbs.
Dimensions	Enclosure: 1.3″ high x 9.3″ wide x 7.0″ deep Modules: 5.55″ high x 4.47″ wide x 1.25″ deep
Location	Indoor Only – Dry Location
Temperature Range	-4F to 122F (-20C to 50C)
Humidity	10-90% RH condensing
Altitude	Up to 4000 m (13,123 ft)
Pollution Degree	Pollution Degree 2
Transient Overvoltage	Category II
Enclosure	UL Type 1 or better. M-XM-ENC is rated as Type 4x to UL std 508, File No. E54315 CSA C22.2 No. 94, File No. LR36508
Certifications	Designed to UL Std: 61010-1 (2018), CSA Std: 22.2 No. 610102-2018

M255 Modbus Controller

Power Supply 24vdc 6.5A

Modbus Module

Uninterruptible Power Supplies

Expansion modules available:

Relay Output Module: Eight relays available to meet user need for increased connections to audio/visual devices, exhaust fans, solenoid valves, etc.
Analog Input Module: Receives up to eight 4-20mA analog inputs from gas detectors or other sensors and re-transmits over RS-485 Modbus to the M255.
Analog Output Module: Outputs up to eight 4-20mA signals to devices such as Entry Monitors or PLCs.
Discrete Input Module: Receives up to four NO/NC input devices such as switches or pushbuttons to be configured by the M255.

GasMark M255 Expansion Module